A gridded-visibility, FFT-accelerated estimator for the binned 21 cm multi-frequency angular bispectrum and 3D bispectrum is presented and validated against simulations with an input bispectrum model.
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A Visibility-based 21 cm Bispectrum Estimator for Radio-interferometric Data
A gridded-visibility, FFT-accelerated estimator for the binned 21 cm multi-frequency angular bispectrum and 3D bispectrum is presented and validated against simulations with an input bispectrum model.